Pressure control in pumping.



e. H. ECKERT. v PRESSURE CONTROL IN PUMPING.

APPLICATION FILED MAY 21. 1915.

1,228,411 9. Patented June 5, 1917.

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2: LE? a: 4 BE; 0 0 5 3 Z aumzmtoz i pm'om attorney UNITED STATES PATENT orrron GEORGE H. noxnnr, or srnnonsn, NEW Yonx, ASSIGNOB TO innmrnnny ens PUMP comment, A conronnrron' or new roan.

, PBESSUQE CONTROL IN PUMPING Specification of Letters Patent.

Patented J l ne 5, 1917.

Application filed May 27, 1915. Serial Ho. 30,729.

I To all whom it may concern:

Be it known that I, Gnonon H. Ecxnn'r, a citizen of the United States, residing at Syracuse, in the countyof Onondaga, State of New York, have invented a new and use- Pressure Control in Pumping, of which thgniiollowing is a specification.

e ing liquids and is especially applicable to that form of method and means wherein the body of liquid is caused to reciprocate, one movement of said reciprocation being due to an expansible charge, and movement of the liquid and the momentum acquired thereby, is utilized to compress a fresh charge. The object of the invention is to prevent excessive compression when the li uid is forced to a relatively high head.

he ordinary simple form of Humphrey pum is to a great'extent limited in the head to which it can deliver liquid, by the amount of compression caused by the return of the liquid column. When this compression becomes excessive, s lashing ensues and therefore thirty-five set is approximately the highest lift that has been accomplished up to the present time.

Referring to the drawing which illustrates merely by way of example, a suitable embodiment of my invention, the figure is a diagrammatic elevation showing the aplicatlon of my invention to the ordinary umphrey pump.v

1 indicates the power chamber, 2 the intake'valves, 3 the play ipe, 4 the normal level of the liquid supp y, 5 the height to which the water would rise due to atmos: pheric pressure if there-is a vacuum in the play pipe above it. 6 are the discharge valves, '1 the delivery outlet. 8 is an air chamber to be used when it is desired to have a partial vacuum only in the play pipe. 9 is a check valve, and 10 is a stop valve for controlling an air inlet, which forms another means for reducing the vacuum in thewater will stand invention relates to moving or forc-' wherein a other means may be and path of travel and path of travel any Humphrey pump, except that when the water comes to rest on the outstroke the delivery valves 6 close and prevent air from rushing back into the overcome upon the next power stroke. this means an additional head of approximately thirty feet may be obtained without causing an excess of compression, or other complication in operating the pump.

f the arrangement as described reduces the compression too much, this can be-modified either by placing an air chamber such as 8, in connection with the pla pipe, so that a perfect vacuum cannot be ormcd; or else by admitting air, as through valves 9 and 10., into the pl valves 6.

The above examples are given merely as specific instances of method and means for modifying the force or pressure of the return stroke when pumping against relatively high heads. It is conceivable that employed which would be equally within the scope of the invention, as defined in the accompanying claims:

What I claim is 1. The method which consists in reciproeating a column of sufficiently limited to of the column and liquid with a velocity preserve the coherence having sufiicient bulk to acquire useful momentum, utilizing an expansive force to cause one stroke of said reciprocation, and restraining a return stroke by a below atmospheric pressure to the rear of the column in order to reduce the pressure developed.

2. The method which consists in reciprocating a column of liquid with a velocity sufiiciently limited to preserve the coherence of the column and having suiiicien't bulk to acquire useful momentum, utilizing an expansive force to cause one stroke of said reciprocation, and reducing the velocity of the return stroke by a below. atmospheric pressure to the rear of the column.

3. The method which consists in reciprocating a column of liquid with a velocity sufliciently limited to preserve the coherence of the column and having suilicient bulk and path of useful momentum, utilizin an expansive force to cause one stroke 0 said reclprocation, discharging a portion of the liquid at the required head and utilizing a partial vacuum above the liquid column beneath the point of discharge, by preventair from entering the space vacated by the returning column, to retard the return stroke.

4, The method which consists in reciprocating a column of liquid with a ve locity sufiiciently limited to preserve the coherence of the column and having suflicient bulk andpath of travel to acquire useful momentum, utilizing an expansive force to cause vone stroke of said reciprocation, to force the liquid to the required head or pressure and utilizing'a vacuum above the liquid column, by preventing air from entering the space vacated by the returning column, stroke, andthereby reduce the pressure to be overcome upon the next power stroke.

5. The combination: of a power chamber, a play pipe for the reciprocation of liquid in operative relationship therewith, Sad

play pipe provided with liquid intake valves and liquid discharge valves, the latter being placed near the upper end-of the play pipe and arranged to close after the discharge of liquid therethrough and thereby cause a vacuum or partial vacuum on top of the liquid column upon its return stroke in order to retard said return stroke. c

6. The combination of a power chamber, a play pipe for the reciprocation of liquid in operative relationship therewith, said 'play pipe provided with liquid intake valves and liquid discharge valves, the latter being placed near the upper end of the play pipe and arranged to close after the discharge of liquid therethrough and thereby cause a'vacuum or partial vacuum on top of the liquid column, by preventing air from entering the space vacated by the returning column, in order to retard said return stroke, and an air chamber connected with the play pipe just beneath the discharge valves for modifying said vacuum.

to retard the return 7'. The combination of a power chamber, a play pipe for the reciprocation of liquid inoperative relationshi therewith, said play pipe provided W1th liquid intake valves and liquid discharge valves, the latter being placed near the upper end of the play pipe and arranged to close after the discharge of liquid therethrough and thereby cause a vacuum or-partial vacuum on top of the liquid column, by preventing air from entering the space vacated by the returning column, in order to retard said return stroke and a valve controlled air intake connected with the play pi e beneath the discharge valves'for mo ifying the vacuum caused by the return stroke.

8. The combination of a play pipe, the reciprocation of liquid and a power chamber in operative relationship therewith, the play pipe provided with liquid intake and discharge, the discharge being at a point elevated above the intake, as means whereby the liquid is made to reciprocate, one stroke of said reciprocation being due to the expansion of a primary medium inthe power chamber, a return stroke being due to a part of the head or pressure to which the liquid has been forced, and means forming a vacuum above the liquid column for retarding the return stroke, in order to modify the compression caused thereby.

9. The combination of a play pipe for the reciprocation of liquid and a power chamber in operative relationship therewith, the play pipe provided with liquid intake and discharge, the discharge being at a point elevated above the intake, as means wherebythe liquid is made to reciprocate, one stroke of said reciprocation being due to the expansion of a primary medium in the power chamber, a return stroke being due to a part of the head or pressure to which the liquid has been forced, and means below atmospheric pressure above the liquid column for modifying the force of the return stroke.

GEO. H. EOKERT.

Witnesses:

GHARIES G. LUMP,

Wnmnn A. Rnvmnn.

for 

